S&S Cycle - S&S Performance Parts 2025 L - Volume 67

2017-UP

www.sscycle.com

Fitment: • 2017–2024 touring models (Excluding 2023-up CVO and 2024 Road Glide and Street Glide models) • 2018–2024 Softail® models

1 2017-UP 2 -2007-'17 3 -1999-'06 4 -1984-'99 5 -1936-'84 6 -XL-RA1250 7 -BELTS & GASKETS 8 -TOOLS 9 -WARRANTY 10 -APPENDIX

Specs For 124" & 128" Big Bore Kits Displacement Bore

Features And Benefits: • 107" to 124" Big Bore Kit • 114" to 128" Big Bore Kit • 114" & 117" CVO™ to 128" Big Bore Kit • 4 250" bore • Forged pistons • 11:1 compression ratio • Wrinkle black or black granite finish

Stroke 4375

Piston Type

Compression Ratio

124” 128"

4 250 4 250

Forged Forged

111 111

45

• S&S does not recommend compression ratios higher than 10:1 for Tri Glide® or other three wheel models (including conversions) due to extra loads caused by the lugging nature of these bikes Detonation and subsequent engine damage may result • The 131" kit Must be used with our stroker flywheels to achieve 131" displacement

• Available with or without highlighted fins • Bolt-on kit — No machining required • Includes head, base, & exhaust gaskets and hardware

124", 128" & 131" Big Bore Kits For 2024 Touring & 2018–'24 Softail® Models (excluding 2023-up CVO and '24 Road Glide and Street Glide models) Displacement Finish Part # 124" Wrinkle Black with Non-Highlighted Fins 910-0681 Wrinkle Black with Highlighted Fins 910-0625

Wrinkle Black with Non-Highlighted Fins Wrinkle Black with Highlighted Fins Black Granite with Highlighted Fins Wrinkle Black with Non-Highlighted Fins Wrinkle Black with Highlighted Fins Black Granite with Highlighted Fins

910-0685 910-0684 910-0733 910-0763 910-0762

128"

131"

910-0764 FOR CLOSED COURSE COMPETITION USE ONLY. NOT INTENDED FOR STREET USE. LEGAL IN CALIFORNIA ONLY FOR RACING VEHICLES WHICH MAY NEVER BE USED, OR REGISTERED OR LICENSED FOR USE, UPON A HIGHWAY. NOT LEGAL FOR SALE OR USE NATIONWIDE ON ANY FEDERAL POLLUTION CONTROLLED MOTOR VEHICLE UNDER THE CLEAN AIR ACT.

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